Bug 545121
| Summary: | possible null pointer dereference in ieee80211_change_iface | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | John W. Linville <linville> | ||||||||
| Component: | kernel | Assignee: | John W. Linville <linville> | ||||||||
| Status: | CLOSED ERRATA | QA Contact: | Red Hat Kernel QE team <kernel-qe> | ||||||||
| Severity: | urgent | Docs Contact: | |||||||||
| Priority: | low | ||||||||||
| Version: | 5.5 | CC: | cmeadors, dzickus, kernel-mgr, rlerch | ||||||||
| Target Milestone: | rc | ||||||||||
| Target Release: | --- | ||||||||||
| Hardware: | All | ||||||||||
| OS: | Linux | ||||||||||
| Whiteboard: | |||||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||||
| Doc Text: | Story Points: | --- | |||||||||
| Clone Of: | Environment: | ||||||||||
| Last Closed: | 2010-03-30 07:44:36 UTC | Type: | --- | ||||||||
| Regression: | --- | Mount Type: | --- | ||||||||
| Documentation: | --- | CRM: | |||||||||
| Verified Versions: | Category: | --- | |||||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||||
| Embargoed: | |||||||||||
| Bug Depends On: | |||||||||||
| Bug Blocks: | 526948 | ||||||||||
| Attachments: |
|
||||||||||
Created attachment 376726 [details]
jwltest-wireless-2_6_32-kill-some-warnings.patch
Missed the warning for the uninitialized variable due to warning SPAM leftover from some earlier hacking. This patch gets rid of that to help avoid doing that again...
Created attachment 376728 [details]
jwltest-cfg80211-extras.patch
A bit of a stretch, but vaguely related since you could/would hit the original problem by switching modes, one of the main reasons to switch modes is for monitoring, and this patch enables you to add monitoring interfaces instead... :-)
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release. in kernel-2.6.18-181.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5 Please update the appropriate value in the Verified field (cf_verified) to indicate this fix has been successfully verified. Include a comment with verification details. change to VERIFIED Checked build logs for warnings on kernel-2.6.18-185.el5. No null dereferences when using very small sampling of wireless devices. Since we didn't see that many before, that is good enough. An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2010-0178.html |
Created attachment 376724 [details] jwltest-ieee80211_change_iface-avoid-null-deref.patch CC [M] net/mac80211/cfg.o net/mac80211/cfg.c: In function `ieee80211_change_iface': net/mac80211/cfg.c:74: warning: 'sdata' might be used uninitialized in this function